137440438 has 8 divisors (see below), whose sum is σ = 206370432. Its totient is φ = 68650296.

The previous prime is 137440423. The next prime is 137440477. The reversal of 137440438 is 834044731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32470 + ... + 36457.

It is an arithmetic number, because the mean of its divisors is an integer number (25796304).

Almost surely, 2^137440438 is an apocalyptic number.

137440438 is a deficient number, since it is larger than the sum of its proper divisors (68929994).

137440438 is an equidigital number, since it uses as much as digits as its factorization.

137440438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69926.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 137440438 is about 11723.4993922463. The cubic root of 137440438 is about 516.0655200939.

The spelling of 137440438 in words is "one hundred thirty-seven million, four hundred forty thousand, four hundred thirty-eight".